NSAttributedString 删除线使我的属性文本消失

Thi*_*obo 2 cocoa-touch nsattributedstring ios

我正在尝试制作带有删除线的属性字符串。我可以设置其他属性,例如前景色和字体大小,但是当我尝试在部分文本中设置删除线时,该部分文本消失了。知道是什么原因造成的吗?

下面是代码。感谢您的关注!

// ...    
    //Price
    NSLog(@"RESULT NUMBER %d", cell.result.resultId);
    priceString = (priceString == nil) ? @"$150.00\n$100.00" : priceString;
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:priceString];
    NSRange linebreak = [priceString rangeOfString:@"\n"];



    if (linebreak.location != NSNotFound) {
        [attributedString beginEditing];
        // RegPrice
        NSRange firstLine = NSMakeRange(0, linebreak.location);
//        [attributedString addAttribute:NSFontAttributeName
//                                 value:[UIFont boldSystemFontOfSize:11]
//                                 range:firstLine];
        [attributedString addAttribute:NSForegroundColorAttributeName
                                 value:[UIColor colorWithRed:0.7 green:0.7 blue:0.7 alpha:1]
                                 range:firstLine];
        @try {
            [attributedString addAttribute:NSStrikethroughStyleAttributeName
                                     value:@(NSUnderlineStyleSingle)
                                     range:firstLine];
        } @catch (NSException *e) {
            NSLog(@"ATTRIBUTE EXCEPTION: %@", e);
        }

        // Sale Price
        [attributedString addAttribute:NSFontAttributeName
                                 value:[UIFont boldSystemFontOfSize:14]
                                 range:NSMakeRange(linebreak.location + 1, priceString.length - (linebreak.location + 1))];
        [attributedString endEditing];
    }
    cell.lblPrice.attributedText = attributedString;

    return cell;
}
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gab*_*bbo 5

我遇到了同样的字符串消失问题,直到我意识到 for 的值NSStrikethroughStyleAttributeName应该是 NSNumber。

因此上面的代码应该是这样的:

目标-c

[attributedString addAttribute:NSStrikethroughStyleAttributeName 
                         value: [NSNumber numberWithInt: NSUnderlineStyleSingle] 
                         range:firstLine];
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在 Swift 4 中,使用类型字典传递属性[NSAttributedStringKey: Any],击球槽样式属性如下所示:

[NSAttributedStringKey.strikethroughStyle: NSNumber(value: NSUnderlineStyle.styleSingle.rawValue)]
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